Finding the Third Proportional to 18,973 and 28,456

Step by Step Solution

1. Step 1: Write the proportion equation
   18,973 : 28,456 = 28,456 : x
2. Step 2: Convert to fraction form
   18,973/28,456 = 28,456/x
3. Step 3: Cross multiply
   18,973x = 28,456 × 28,456
4. Step 4: Simplify right side
   18,973x = 809,743,936
5. Step 5: Solve for x
   x = 809,743,936/18,973
6. Step 6: Final answer
   x = 42,678.75